After Effects Export Using Up Disk Space

So before I hit the render button, I have 32gb of disk space on my HD, then as the comp begins to render, that space goes down until it hits like 40mb and after effects can't render. The comp is not that big, and I'm also rendering to a server, the the file size of the exported comp is not the issue. Why is this happening and how can I fix it. Also if I close after effects, my disk space goes back to normal.

Yes I am 100% I'm rendering to the server. When I hit render, the storage on my HD drops to almost 0mb within 5 min. Then when I stop the render, all the disk space slowly comes back after 10 min or so. I think there is a bigger issue here than storage. No one in my office has ever seen anything like this happen before.